Popular third-party Android browser Dolphin made its way to the App Store in August of last year bringing highly customizable gestures, built-in translations, and a dock-style sidebar for quick access to tabs, bookmarks, and speed dial. Today, developers MoboTap Inc. pushed out an update to the iPhone app that, among other new features, introduced voice search functionality called “Dolphin Sonar.”

Dolphin Sonar is super easy to use and can do almost anything. Instead of typing, tap the microphone at the bottom left or just shake your phone (because who doesn’t want an excuse to do that!). Then say what you want to say and Dolphin will do the rest… use your voice to search the Web, find exactly what you’re looking for on sites like Facebook or eBay, bookmark your favorite website, and (like a real Dolphin!) use Sonar to navigate. Ask Dolphin to search on Facebook or create a new tab…all without having to type a single letter.

Other additions to the update include the return of the URL keyboard “by popular demand,” new search engine options to switch between four default settings, three font size options for browsing, and the ability to dim the screen with a single tap using “Night Mode.” Like the default Safari browser, Dolphin will also now save images directly to your iPhone’s photo album. You will also get the usual stability and performance enhancements when you grab version 4.0 of the Dolphin browser on the App Store (iTunes link).

The iPad version of the Dolphin app was also updated yesterday with a tab restore feature for when the app is shut down while running in the background. It also includes a fixes for page loading bugs and stability improvements. You can get the iPad version, minus the new Sonar voice feature, here.